Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 782 · 40 questions

Remember (Find the topic, use the idea): Find the topic: energy, safety, conductor, closed loop, switches, cells, symbols, series or parallel. Use that lesson’s idea — complete loop, all ON for series, cells add up, one path or many. For sums, write the working and check it again.

1. 1.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
2. 2.🔍 Which is the odd one out? (a) keep drinks far away (b) touch a fallen wire (c) use small battery cells (d) build with an adult near
3. 3.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
4. 4.True or false: if the bulb is unscrewed, the circuit is open and no current flows. (a) False (b) True
5. 5.Which drawing is the symbol for a motor? (a) many long-short pairs (b) a circle with A inside (c) a circle with M inside (d) two or more cell symbols
6. 6.🔘 What does a switch do in a circuit? (a) changes the voltage (b) opens or closes the loop (c) makes electricity (d) stores current
7. 7.True or false: a straight line is the symbol for a capacitor. (a) False (b) True
8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put aluminium foil across the gap. Does the bulb glow? (a) Yes (b) No
9. 9.🔋 What should you do with used-up cells? (a) throw them in a fire (b) give them for recycling (c) cut them open (d) bury them in soil
10. 10.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
11. 11.🔋 6 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
12. 12.True or false: a cotton thread is a conductor. (a) True (b) False
13. 13.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) Yes (b) No
14. 14.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
15. 15.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) nobody (c) a stranger online (d) a trusted adult
16. 16.Which of these mainly makes movement? (a) an electric toy car (b) a street light (c) an LED lamp (d) an electric iron
17. 17.Which of these gives us electricity? (a) a refrigerator (b) a cell (c) a washing machine (d) an air conditioner
18. 18.🔌 Which metal is used for most electric wires at home? (a) plastic (b) rubber (c) copper (d) glass
19. 19.Which of these is not safe? (a) stop if a part gets hot (b) fly kites in open fields (c) poke things in a socket (d) keep drinks far away
20. 20.🔍 Which is the odd one out? (a) use small battery cells (b) open a phone charger (c) use a cable with cuts (d) poke things in a socket
21. 21.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
22. 22.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) the shorter line (d) neither line
23. 23.Which of these mainly gives out heat? (a) a street light (b) a school bell (c) a tube light (d) a water heater
24. 24.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
25. 25.What does a push button do? (a) stays where you flip it (b) closes when tipped over (c) slides side to side (d) works only while pressed
26. 26.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
27. 27.Which of these mainly makes movement? (a) a street light (b) a mixer grinder (c) a room heater (d) an electric iron
28. 28.Which of these means the circuit is open? (a) the bulb is unscrewed (b) the switch is ON (c) the loop is complete (d) all wires are joined
29. 29.Which of these means the circuit is closed? (a) a cell is taken out (b) the loop is complete (c) the bulb is unscrewed (d) a wire has come loose
30. 30.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) so all go off together (c) each gets full voltage (d) to save copper only
31. 31.🔍 Which is the odd one out? (a) take cells out after use (b) dry your hands first (c) keep drinks far away (d) use mains for a project
32. 32.🔋 5 identical 3 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
33. 33.💡 In a series circuit, how many paths does the current have? (a) none (b) one for each bulb (c) one (d) two
34. 34.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
35. 35.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is ON, C is ON and D is OFF. Does the bulb glow? (a) No (b) Yes
36. 36.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) battery (b) motor (c) wire (d) voltmeter
37. 37.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
38. 38.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the bare end (c) the metal tip (d) the plastic handle
39. 39.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
40. 40.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator

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